adding dnf install rule

README.md

@@ -216,6 +216,7 @@ Enabled by default only on specific platforms:
 * `brew_upgrade` – appends `--all` to `brew upgrade` as per Homebrew's new behaviour;
 * `pacman` – installs app with `pacman` if it is not installed (uses `yaourt` if available);
 * `pacman_not_found` – fixes package name with `pacman` or `yaourt`.
+* `dnf_install` – fixes `dnf install` command
 
 Bundled, but not enabled by default:
 

tests/rules/test_dnf_install.py

@@ -0,0 +1,13 @@
+import pytest
+from mock import Mock, patch
+from thefuck.rules import dnf_install
+from tests.utils import Command
+
+
+@pytest.mark.parametrize('command, new_command', [
+    (Command('dfn install python'), 'sudo dnf install python'),
+    (Command('dnf istall python'), 'sudo dnf install python'),
+    (Command('dfn install python'), 'sudo dnf install python'),
+    (Command('dfn install python ruby'), 'sudo dnf install python ruby')])
+def test_get_new_command(command, new_command):
+    assert dnf_install.get_new_command(command) == new_command

thefuck/rules/dnf_install.py

@@ -0,0 +1,24 @@
+from thefuck import shells
+from thefuck.utils import memoize
+
+
+def get_packages(command):
+    splitted_command = command.script.split()
+    if splitted_command[0] == 'sudo':
+        return splitted_command[3:]
+    return splitted_command[2:]
+
+
+def match(command):
+    typos = ('dfn install', 'dnf istall', 'dfn istall')
+    patterns = ("not found", "No such command")
+    stderr = command.stderr
+
+    found_pattern = any(pattern in stderr for pattern in patterns)
+    found_typo = any(typo in command.script for typo in typos)
+    return  found_pattern and found_typo
+
+
+def get_new_command(command):
+    packages = get_packages(command)
+    return 'sudo dnf install {}'.format(' '.join(packages))